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  1. N

    Currant imbalance submersible pump

    We have lifted the pump, no damage at all. The cables look to have one wrap arcoss the total of the 100m of riser. The pump went back to the supplier as the supllied the cable and made the joins, insualtion resistance was low @ 30Mohm, we thought that there may have been moisture in that...
  2. N

    Currant imbalance submersible pump

    We did not change the connections on the VFD, we assumed as the low current heading down the well that the issue was with the drop cables/motor or join.
  3. N

    Currant imbalance submersible pump

    New pump/motor and cable - existing vsd. we have no way of knowing if there was an issue with the old pump in terms of imbalance as the old paperwork from comission only noted drive amps as average of three phases.
  4. N

    Currant imbalance submersible pump

    drop cable from the well head to the motor, imabalance stays with that conductor in all 3 hook up combinations.
  5. N

    Currant imbalance submersible pump

    We have a 130kw submersible pump on a VSD that is showing nearly 9% currant imbalance. It also shows induced current on the earth rising from the motor. The pump is 100m deep and the riser pipe is 8 inch and the well casing is 12 inch. Pump is 12 inch. 95 mm2 cable is run down to the 6 wire...

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